Glass-furnace.



Patented Aug. 8, |899.

J. M. MILLER.

GLASS FUHNACE.

(Application led Sept. 25, 1897. Renewed Jan. l1, 1899.)

2 Sheets-Shut l.

(No Model.)

No. 630,464. Patented Aug. 8, |899. J. M.,MILLER.

l GLASS Fummce.

(Application Bled Sept. 25, 1897. Renewed Jan. 11, 189D.)

(No Model.) 2 Sheets-Sheet 2.

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UNITED STATES PATENT OFFICE.

JOHN MURRAY MILLER, OE BELLEVUE, PENNSYLVANIA.

GLASS-FURNACE.

SPECIFICATION forming part of Letters Patent No. 630,464, dated August 8, 1899.

Application filed September 25,1897. Renewed January 1l, 1899. Serial No. 701,853. (No model.)

tion and partially in longitudinal vert-ical section, of a glass-pot furnace made in accordance with my invention. Fig. 2 is a sectional plan view thereof. Fig. 3 is a crosssection on theline III III of Fig. 2. Fig. 4 is an enlarged vertical sectional detail view taken through the door, showing the connections.

My invention consists of an improvement inl glass-melting furnaces, and has for its object the construction of a furnacein which separate chambers are arranged for each pot,

through which chambers the gas may be di` rected at will and the operation of any of the chambers discontinued without interfering with the rest of the furnace. To that end it consists in the construction and arrangement of gas and air passages and ports whereby a circulation is main tained in either direction, as shown in the accompanying drawings and hereinafter described.

It further consists in the construction of a slag-pocket for collecting waste or melted glass, broken pots, dac., and in an improved water-cooled door, as shall be set forth.

In the ordinary form of pot-furnace when a pot breaks, allowing the melted glass to escape, the pot may not be renewed until the heat is finished, and then only by throwing the entire furnace outpof operation. My improved furnace is designed to obviate these difliculties and to secure a furnace which is compact and economical to construct and `opening for entrance and exit of workmen to remove slag, refuse, tbc. Extending upwardly from such chamber is a series of open ports 8,Which serve the double purpose of acting as gas and air inlet and outlet passages vand as escape-ports for melted glass, the., escaping from the pot-chamber into the slag pocket. Into these ports 8 also lead lateral ports 9 from the gas-chamber and ports 10 from the air-chamber, whereby the gas and air are introduced into the pot-chamber prior to combustion. An open port 11 through the bottom of a middle partition-wall 12 or immediately above the bench serves as a communicating passage for the gas to the adjoining chamber, from which the products of combustion pass downwardly through the ports 8 on the opposite side and out through the regenerative chambers in the usual wellknown manner.

It will be understood that the slag-pocket is sealedpduring the operation of the furnace and closed against circulation of the gases. By reversing the circulation the gases will Atravelin the reverse direction, so that an equal heat may at all times bemaintained in the pot-chambers.

The front of the pot-chambers is closed by hinged doors 13 1?, made of cast or sheet metal, with an interior water-compartment 114, internally reinforced by bafIie-plates, such door acting as a shield to protect the workman from the heat. Inlet-pipes 15 connect the door when closed with a main feed-water pipe 16, located along the front of the furnace vabove the tops of the doors, while similar outlet-pipes 17 serve to carry off the waste water into openings 18, leading into a common exhaust-pipe 19 below theV` level of the iioor 20. A valve 21 in each inlet-pipe is used to regulate the inflow. At the meeting edges of the IOO will be appreciated by the skilled furnaceV builder and glass manufacturer, and while changes and variations may be made in the proportions or arrangement of the chambers, ports, &c., to suit varying conditions of use all such are to be considered as within the scope of my invention, since I do not wish to beconfined to the exact construction shown in the drawings.

Having described my invention, what IA claim', and' desire to secure by Letters Patent, isy l. In a glass-furnace, adjoining pot-chambers laterally arranged across the structure in isolated pairs, a central longitudinal partition midway between the opposite chambers, av communicating passage through the base of thepartition, air and gas regenerative chambers located below the pot-chambers with ports leading to lues opening upwardly into the pot-chambers, and a slag-pocket between such regenerative chambers into which the lwue's lead downwardly, substantially as set forth;

2. In a glass-furnace, adjoining pot-chambers laterally arranged across the structure in isolated pairs, a central longitudinal partition midway between the opposite chambers, a communicating passage through the base of the partition, airand gas regenerative chambers located below the pot-chambers with portsV leading to iiues opening upwardly into the pot-chambers, a slag-pocket between such regenerative chambers into which 4the iues lead downwardly and damper-valves in the dues, substantially as set forth.

3. The combination, with a series of laterally-arranged' adjoining pot-chambers eX- tending across the structure having intervening partitions and a communicating passage therethrough at the base, of continuous gas and air regenerative chambers located below the floor of the pot-chambers, continuous slagpockets between the gasl and air regenerative chambers having ports leading'upwardly into the pot-chambers, and lateral ports communieating with such port and with the gas and yair regenerative chambers respectively, substantially as set forth.

4. The combination, with a longitudinal fseries" of 'laterally-arranged adjoining potchambers extending across the structure having intervening cross-partitions with a communicating passage at the base, continuous slag-pockets beneath the pot-chamberv floors, `andl air and gas regenerative chambers on each side of such slag-pockets, ports'leading upwardly from the slag-pockets to the potchambers andair and gas ports leading thereinto from the regenerative chambers; of water-cooled doors hinged at the front of the pot-chamberhaving a chamberedinterior, reinforced, valve-controlled' feed-water branch pipes leading from a main feed-pipe to the interior of the door, and exhaust-pipesleadin g from the door to a waste-pipe, substantially as set forth'.

J. MURRAY MILLER.

IVitnesses:

PETER J. EDWARDS, C. M. CLARKE. 

